Pressure-resistant and impact-resistant pipeline connecting structure for deep sea operation

Abstract

The invention relates to the technical field of deep sea engineering, and discloses a pressure-resistant and impact-resistant pipeline connecting structure for deep sea operation, which comprises outer pipes, a plurality of outer pipes are connected with a steering mechanism through buffer pads, a protection mechanism is arranged on the outer sides of the outer pipes, and inner pipe mechanisms are arranged on the inner sides of the outer pipes and the inner side of the steering mechanism; the steering mechanism comprises an inner ball head and an outer ball shell, the left end of the inner ball head is arranged on the right side of the corresponding connecting pipe, the right end of the outer ball shell is arranged on the left side of the corresponding connecting pipe, the inner ball head rotates in the outer ball shell, and a second protective sleeve is arranged on the outer side of the outer ball shell. The buffering cushion is located between the outer pipe and the connecting pipe, the convex ring block is clamped with the flange convex groove, the screw rod is fixed, the steering mechanism inner ball head rotates in the outer ball shell, and the inner pipe ring block and the like guarantee sealing. In protection, multiple parts of the outer pipe outer side protection mechanism are matched, the buffering cushion and the steering mechanism outer spherical shell are provided with protection sleeves, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of deep sea engineering, in particular to a pressure-resistant and impact-resistant pipeline connection structure for deep sea operations. Background Art

[0002] As the development of marine resources moves towards the deep sea, deep-sea pipelines are the key to transporting oil and gas in the development of deep-sea oil and gas resources. However, the harsh environment of the deep sea, such as high pressure, low temperature, and strong corrosion, places extremely high demands on pipeline materials and structural design. The difficulty of its installation, construction, inspection and maintenance is also far greater than that of shallow sea, prompting continuous improvement of related technologies.

[0003] In the deep-sea high-pressure and strong impact environment, high-performance rubber sealing rings or metal sealing rings form a reliable seal at the pipe joint to prevent fluid leakage. The main structure of the connection part is made of high-strength alloy material, which can withstand huge water pressure and ensure the overall stable operation of the pipeline.

[0004] Deep-sea pipelines are unable to effectively buffer external forces when faced with the complex and ever-changing environment of the deep sea, such as strong ocean current impacts and vibrations caused by changes in seabed topography, making the pipelines and their connections vulnerable to damage. This is extremely unfavorable for transporting media with temperature requirements, and the stability of the pipeline structure may also be affected by temperature changes. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pressure-resistant and impact-resistant pipeline connection structure for deep-sea operations, which solves the problem that deep-sea pipelines have poor buffering and are easily damaged by current impact and terrain vibration, affecting structural stability.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A pressure-resistant and impact-resistant pipeline connection structure for deep-sea operations, comprising an outer tube, a plurality of the outer tubes are connected to a steering mechanism through a buffer pad, a protection mechanism is arranged on the outer side of the outer tube, and an inner tube mechanism is arranged on the inner side of the outer tube and the steering mechanism; The steering mechanism includes an inner ball head and an outer ball shell. The left end of the inner ball head is arranged on the right side of the corresponding connecting tube, and the right end of the outer ball shell is arranged on the left side of the corresponding connecting tube. The inner ball head rotates inside the outer ball shell, and a protective cover 2 is arranged on the outside of the outer ball shell.

[0007] Preferably, the buffer pad is arranged between the corresponding outer tube and the corresponding connecting tube, the right end of the connecting tube on the left and the left end of the outer tube on the right are both provided with flanges, convex grooves are opened between the flanges, convex ring blocks are provided at both ends of the buffer pad, the convex ring blocks are engaged with the corresponding convex grooves, the flanges are connected by screws, the screws pass through the buffer pad, and a protective mechanism is provided on the outside of the buffer pad.

[0008] Preferably, the protection mechanism comprises a protective cover 1, and the protective cover 1 is arranged on the outside of the buffer pad, and fastening belts are arranged on both ends of the protective cover 1 and the left side of the protective cover 2.

[0009] Preferably, the protective mechanism includes outer circular tube one and outer circular tube two, and the outer circular tube one and outer circular tube two are arranged on the outside of the outer tube, and the four corners of the outer side of the outer circular tube two are provided with installation grooves. The outer circular tube one and outer circular tube two are connected by multiple bolts, and the bolts pass through the bottom of the installation groove and are connected to the outer circular tube one, and bolt sleeves are provided on the outside of the bolts.

[0010] Preferably, the outer tube and the inner tube mechanism are connected via a plurality of V-shaped blocks, a thermal insulation and anti-impact plate is provided between the outer tube and the inner tube mechanism, and a plurality of reinforcing ribs are provided inside the thermal insulation and anti-impact plate.

[0011] Preferably, arc rings are arranged on the outer sides of the outer tubes, arc grooves are opened at both ends of the outer circular tube 1 and the outer circular tube 2, and the arc rings are arranged between the arc grooves.

[0012] Preferably, the inner tube mechanism comprises an inner tube, which is arranged on the inner side of the outer tube and the steering mechanism, and ring blocks are arranged at the connection points at both ends of the inner tube, and U-shaped clamping blocks are arranged on the outer side of the ring blocks, and multiple sealing gaskets are arranged between the ring blocks.

[0013] Preferably, a plurality of U-shaped pads are disposed on the inner sides of the outer circular tube 1 and the outer circular tube 2, and positioning rods are disposed on both ends of the lower U-shaped pad, and the positioning rods are engaged with the cylindrical grooves corresponding to the upper U-shaped pad.

[0014] Preferably, the U-shaped gaskets are all engaged with the connecting pipes, and the U-shaped gaskets are all in contact with the outer sides of the connecting pipes.

[0015] Preferably, the outer sides of the outer circular tube 1 and the outer circular tube 2 are each provided with a plurality of circular holes, and the plurality of circular holes are equidistantly distributed.

[0016] The present invention provides a pressure-resistant and impact-resistant pipeline connection structure for deep-sea operations. It has the following beneficial effects: 1. The present invention ensures connection stability and impact resistance in the pipeline connection structure for deep-sea operations. The buffer pad is located between the outer pipe and the connecting pipe. Its convex ring block is engaged with the flange convex groove and is fixed by a screw rod, which can effectively buffer external forces such as ocean current impact and terrain vibration. The inner ball head of the steering mechanism rotates in the outer spherical shell, so that the pipeline can adapt to complex terrain and ocean current changes and reduce forced bending damage. The ring block, U-shaped block and sealing gasket of the inner pipe ensure that the inner pipe connection is stable and sealed, prevent medium leakage, and ensure normal transportation in a high-pressure deep-sea environment.

[0017] 2. The pipeline connection structure of the present invention has a significant effect on ensuring thermal insulation and structural stability. The thermal insulation and anti-impact plate between the outer pipe and the inner pipe is provided with reinforcing ribs inside, which can prevent heat from being transferred between the inner and outer pipes, maintain the stable transportation of the medium with temperature requirements, and enhance the structural strength of the thermal insulation and anti-impact plate itself, so that it is not easy to deform when subjected to external force. At the same time, the protective mechanism on the outside of the outer pipe provides stable support for the outer pipe through the cooperation of multiple components such as outer circular pipes, bolts, bolt sleeves, arc rings, U-shaped pads, etc., effectively resisting the impact and corrosion in the deep sea environment, and ensuring the stability of the overall structure.

[0018] 3. In the entire pipeline connection structure of the present invention, the protection measures for key components are perfect, which can extend the service life and expand the functions. The protection mechanism on the outside of the buffer pad includes a protective sleeve 1 and a protective sleeve 2 with a tightening belt. The two are closely matched to prevent the buffer pad from being damaged in the complex deep sea environment. A protective sleeve 2 is provided on the outside of the outer spherical shell of the steering mechanism to prevent it from external erosion and physical damage. In addition to protecting the outer tube, the outer circular tube in the protective mechanism has equidistantly distributed circular holes to reduce weight without affecting the protection function, increase practicality and protect the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a schematic diagram of the development of the present invention; Figure 3 For the present invention Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 For the present invention Figure 2 A cross-sectional schematic diagram of the middle inner tube mechanism; Figure 5 It is a right side schematic diagram of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 For the present invention Figure 2 A cross-sectional schematic diagram of the steering mechanism; Figure 8 For the present invention Figure 2 An enlarged schematic diagram of the protection mechanism.

[0020] Among them, 1. outer tube; 2. connecting tube; 3. protection mechanism; 301. outer circular tube one; 302. arc groove; 303. round hole; 304. U-shaped pad; 305. positioning rod; 306. bolt sleeve; 307. mounting groove; 308. outer circular tube two; 309. bolt; 4. arc ring; 5. protection mechanism; 501. protection sleeve one; 502. tightening belt; 6. convex ring block; 7. buffer pad; 8. steering mechanism; 801. inner ball head; 802. outer spherical shell; 9. convex groove; 10. flange; 11. inner tube mechanism; 1101. inner tube; 1102. U-shaped block; 1103. sealing gasket; 1104. ring block; 12. V-shaped block; 13. reinforcing rib; 14. thermal insulation and impact-resistant plate; 15. protection sleeve two; 16. screw. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a pressure-resistant and impact-resistant pipeline connection structure for deep-sea operations, including an outer pipe 1, which is the basic part of the entire structure and provides main support for pipeline connection. A buffer pad 7 is arranged between the corresponding outer pipe 1 and the corresponding connecting pipe 2. The buffer pad 7 is between the outer pipe 1 and the connecting pipe 2. The main function of the buffer pad 7 is to buffer the impact of external force on the pipeline connection part, reduce the damage caused by external force, and ensure the stability of the connection. The right end of the left connecting pipe 2 and the left end of the right outer pipe 1 are both provided with a flange 10. The flange 10 is used to connect the left connecting pipe 2 and the right outer pipe 1, providing a reliable connection method for the connection between the two, ensuring the tightness and stability of the connection. The flanges 10 are provided with convex grooves 9, and the two ends of the buffer pads 7 are provided with convex ring blocks 6, which are engaged with the corresponding convex grooves 9. The engaging structure of the convex grooves 9 and the convex ring blocks 6 fixes the position of the buffer pads 7 between the flanges 10, and at the same time enhances the connection stability between the buffer pads 7 and the flanges 10, ensuring that the buffer pads 7 can play an effective role. The flanges 10 are connected by screws 16, and the screws 16 penetrate the buffer pads 7. The screws 16 further strengthen the connection between the flanges 10, making it tighter. At the same time, penetrating the buffer pads 7 also ensures that the buffer pads 7 will not be easily displaced when subjected to external forces, thereby maintaining the integrity of the entire connection structure. The outer tube 1 and the inner tube mechanism 11 are connected by a plurality of V-shaped blocks 12. The V-shaped blocks 12 are used to connect the outer tube 1 and the inner tube mechanism 11, provide stable support for the inner tube mechanism 11, ensure the stability of the position of the inner tube 1101 in the pipeline, and avoid shaking or displacement of the inner tube 1101 due to external forces and other factors. A thermal insulation anti-impact plate 14 is arranged between the outer tube 1 and the inner tube mechanism 11. A plurality of reinforcing ribs 13 are arranged inside the thermal insulation anti-impact plate 14. The thermal insulation anti-impact plate 14 can prevent heat from being transferred between the inner and outer tubes, ensure the temperature stability of the medium with temperature requirements during the transportation process, and the reinforcing ribs 13 inside can enhance the structural strength of the thermal insulation anti-impact plate 14, so that it is not easy to deform when subjected to external force impact, and better protect the pipeline structure and maintain the temperature environment; The outer side of the buffer pad 7 is provided with a protection mechanism 5, which includes a protection cover 1 501. The protection cover 1 501 is provided on the outer side of the buffer pad 7. The protection cover 1 501 is located on the outer side of the buffer pad 7, mainly to protect the buffer pad 7 from direct damage from the external environment, such as water flow impact in the deep sea, collision with debris, etc., to extend the service life of the buffer pad 7. Fastening belts 502 are provided at both ends of the protection cover 1 501 and the left side of the protection cover 2 15. The fastening belts 502 tightly connect the protection cover 1 501 and the protection cover 2 15, further enhancing the protection effect of the buffer pad 7 and preventing the buffer pad 7 from being damaged from the side. Multiple outer tubes 1 are connected to the steering mechanism 8 through the buffer pad 7, so that the outer tube 1 and the steering mechanism 8 can buffer the external force through the buffer pad 7, and at the same time achieve effective connection between the two, ensuring the coordination between the steering mechanism 8 and the outer tube 1 during operation. The steering mechanism 8 includes an inner ball head 801 and an outer spherical shell 802. The left end of the inner ball head 801 is arranged on the right side of the corresponding connecting pipe 2, and the right end of the outer spherical shell 802 is arranged on the left side of the corresponding connecting pipe 2. The inner ball head 801 rotates inside the outer spherical shell 802. This rotating structure of the inner ball head 801 and the outer spherical shell 802 enables the pipeline to realize the steering function under the complex terrain and ocean current environment in the deep sea, reducing the stress concentration and damage caused by the forced bending of the pipeline. A protective cover 15 is arranged on the outside of the outer spherical shell 802. The protective cover 15 protects the outer spherical shell 802 and prevents it from being eroded and physically damaged in the deep sea environment, thereby ensuring the normal operation of the steering mechanism 8. An inner tube mechanism 11 is provided on the inner side of the outer tube 1 and the steering mechanism 8. The inner tube mechanism 11 includes an inner tube 1101. The inner tube 1101 is provided on the inner side of the outer tube 1 and the steering mechanism 8. The inner tube 1101 is the main channel for conveying the medium. Being provided on the inner side, it can be protected by the outer tube 1 and the steering mechanism 8, thereby reducing the influence of external factors on the medium conveying. Ring blocks 1104 are provided at the connection points at both ends of the inner tube 1101. U-shaped clamping blocks 1102 are provided on the outer side of the ring blocks 1104. Multiple sealing gaskets 1103 are provided between the ring blocks 1104. The ring blocks 1104 are used to connect the two ends of the inner tube 1101. The U-shaped clamping blocks 1102 enhance the connection stability of the ring blocks 1104. The sealing gaskets 1103 ensure the sealing of the connection points of the inner tube 1101, thereby preventing the medium from leaking and ensuring that the pipeline can normally convey the medium in a high-pressure deep-sea environment.

[0023] Please refer to the attached Figure 2A protective mechanism 3 is arranged on the outside of the outer tube 1. The protective mechanism 3 includes an outer tube 1 301 and an outer tube 2 308. The outer tube 1 301 and the outer tube 2 308 are arranged on the outside of the outer tube 1. The outer tube 1 301 and the outer tube 2 308 of the protective mechanism 3 are used to protect the outer tube 1 and reduce the damage caused by impact, corrosion, etc. in the deep sea environment. The outer four corners of the outer tube 2 308 are provided with mounting grooves 307. The mounting grooves 307 provide mounting positions for bolts 309. The outer tube 1 301 and the outer tube 2 308 are provided on the outer side of the outer tube 1. 08 are connected by multiple bolts 309, and the bolts 309 are connected to the outer tube 1 301 through the bottom of the installation groove 307. The bolts 309 are used to connect the outer tube 1 301 and the outer tube 2 308, so that the protection mechanism 3 forms a whole, ensures the stability of its structure, and better protects the outer tube 1. The outer side of the bolts 309 is provided with bolt sleeves 306, and the bolt sleeves 306 prevent the bolts 309 from being covered by microorganisms or shellfish. The outer side of the outer tube 1 is provided with arc rings 4, and the outer tube 1 301 and the outer tube 2 are connected. Both ends of the second tube 308 are provided with arc grooves 302, and the arc rings 4 are arranged between the arc grooves 302. The cooperation of the arc rings 4 and the arc grooves 302 realizes the relative positioning and fixation of the protection mechanism 3 and the outer tube 1, so that the protection mechanism 3 can be accurately installed on the outer tube 1 and maintain a stable position relationship. A plurality of U-shaped pads 304 are arranged on the inner sides of the outer tube 1 301 and the outer tube 2 308, and positioning rods 305 are arranged on both ends of the lower U-shaped pad 304, and the positioning rods 305 correspond to the upper U-shaped pad 304. The cylindrical grooves are engaged with each other, and the U-shaped pad 304 provides support for the outer tube 1. The engagement of the positioning rod 305 and the cylindrical groove enhances the overall stability of the protective mechanism 3, making the protective effect better. Multiple circular holes 303 are provided on the outer sides of the outer circular tube 1 301 and the outer circular tube 2 308, and the multiple circular holes 303 are equidistantly distributed. The circular holes 303 reduce the weight of the protective mechanism 3 without affecting its protective function. At the same time, these circular holes 303 can also be used as installation interfaces for auxiliary equipment or detection devices, thereby improving the practicability of the protective mechanism 3.

[0024] Working principle: First, in the pipeline connection, the left connecting pipe 2 and the right outer pipe 1 are connected by flanges 10. The convex grooves 9 between the flanges 10 are engaged with the convex ring blocks 6 at both ends of the buffer pad 7. The buffer pad 7 has both buffering and auxiliary positioning functions. The screw 16 penetrates the buffer pad 7 to connect the flange 10. When subjected to external forces such as ocean current impact and terrain vibration, the buffer pad 7 uses its own elasticity and compressibility to absorb and disperse the impact force, protect the pipeline and its connection parts, and reduce stress concentration damage. The outer pipe 1 and the inner pipe mechanism 11 are connected by multiple V-blocks 12 to provide stable support for the inner pipe mechanism 11. A plurality of reinforcing ribs 13 are provided inside the thermal insulation and anti-impact plate 14 between the two to enhance the structural strength of the thermal insulation and anti-impact plate 14, making it It is not easy to deform when subjected to external force, can effectively prevent heat transfer, maintain the temperature stability of the pipeline that transports the medium with temperature requirements, and ensure the stability of the pipeline structure. The protection mechanism 5 on the outside of the buffer pad 7 can protect the buffer pad 7. The protective sleeve 1 501 is located on the outside of the buffer pad 7. It and the fastening belt 502 on the left side of the protective sleeve 2 15 make the two fit closely to prevent the buffer pad 7 from being scratched and collided in the complex deep sea environment, ensuring its normal operation and extending its service life. Multiple outer pipes 1 are connected to the steering mechanism 8 through the buffer pad 7. The inner ball head 801 of the steering mechanism 8 rotates in the outer spherical shell 802 to realize pipeline steering, so as to adapt to the complex terrain and current changes in the deep sea, reduce the stress concentration and damage caused by forced bending of the pipeline, and the outer The protective sleeve 15 on the outside of the spherical shell 802 can prevent the steering mechanism 8 from being corroded and physically damaged by the external environment. The inner tube 1101 of the inner tube mechanism 11 has ring blocks 1104 at the connection points at both ends. The U-shaped clamping blocks 1102 integrally formed on the outside can fix the position of the ring blocks 1104. The multiple sealing gaskets 1103 between the ring blocks 1104 ensure the sealing of the connection points of the inner tube 1101 to prevent medium leakage and ensure that the pipeline can normally transport the medium under high-pressure deep-sea environment. The integrally formed U-shaped clamping blocks 1102 can enhance the structural stability, ensure the sealing performance, improve the convenience and accuracy of installation, enhance the corrosion resistance and strengthen the resistance to impact and vibration. The protective mechanism 3 on the outside of the outer tube 1 includes an outer round tube 301 and an outer The second circular tube 308 is connected by multiple bolts 309. The arc grooves 302 at both ends of the outer circular tube 1 301 and the outer circular tube 2 308 cooperate with the arc ring 4 on the outside of the outer tube 1 to achieve relative positioning and fixation. The multiple U-shaped pads 304 on the inner side provide support for the outer tube 1. The positioning rods 305 at both ends of the lower U-shaped pad 304 engage with the cylindrical grooves corresponding to the upper U-shaped pad 304 to enhance the overall stability of the protection mechanism 3. The equidistantly distributed circular holes 303 on the outside of the outer circular tube 1 301 and the outer circular tube 2 308 reduce weight without affecting the protection function, and can be used as an installation interface for auxiliary equipment or detection devices. The protection mechanism 3 can effectively protect the outer tube 1 from impact, corrosion and other damages in the deep sea environment.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations, comprising an outer pipe (1), characterized in that: The plurality of outer tubes (1) are connected to the steering mechanism (8) via a buffer pad (7); a protection mechanism (3) is arranged on the outside of the outer tube (1); and an inner tube mechanism (11) is arranged on the inside of the outer tube (1) and the steering mechanism (8); The steering mechanism (8) comprises an inner ball head (801) and an outer ball shell (802); the left end of the inner ball head (801) is arranged on the right side of the corresponding connecting tube (2); the right end of the outer ball shell (802) is arranged on the left side of the corresponding connecting tube (2); the inner ball head (801) rotates inside the outer ball shell (802); and a second protective cover (15) is arranged on the outside of the outer ball shell (802).

2. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 1 is characterized in that: The buffer pad (7) is arranged between the corresponding outer tube (1) and the corresponding connecting tube (2); the right end of the left connecting tube (2) and the left end of the right outer tube (1) are both provided with flanges (10); a convex groove (9) is provided between the flanges (10); convex ring blocks (6) are provided at both ends of the buffer pad (7); the convex ring blocks (6) are engaged with the corresponding convex grooves (9); the flanges (10) are connected by screws (16); the screws (16) penetrate the buffer pads (7); and a protective mechanism (5) is provided on the outer side of the buffer pads (7).

3. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 2 is characterized in that: The protection mechanism (5) comprises a protective sleeve 1 (501), wherein the protective sleeve 1 (501) is arranged on the outside of the buffer pad (7), and fastening belts (502) are arranged at both ends of the protective sleeve 1 (501) and on the left side of the protective sleeve 2 (15).

4. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 1 is characterized in that: The protection mechanism (3) comprises an outer circular tube 1 (301) and an outer circular tube 2 (308). The outer circular tube 1 (301) and the outer circular tube 2 (308) are arranged on the outside of the outer tube (1). Four corners of the outer side of the outer circular tube 2 (308) are provided with mounting grooves (307). The outer circular tube 1 (301) and the outer circular tube 2 (308) are connected by a plurality of bolts (309). The bolts (309) pass through the bottom of the mounting grooves (307) and are connected to the outer circular tube 1 (301). Bolt sleeves (306) are provided on the outer sides of the bolts (309).

5. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 1, characterized in that: The outer tube (1) and the inner tube mechanism (11) are connected via a plurality of V-shaped blocks (12); a heat-insulating anti-impact plate (14) is provided between the outer tube (1) and the inner tube mechanism (11); and a plurality of reinforcing ribs (13) are provided inside the heat-insulating anti-impact plate (14).

6. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 4, characterized in that: The outer side of the outer tube (1) is provided with an arc ring (4), both ends of the outer circular tube 1 (301) and the outer circular tube 2 (308) are provided with arc grooves (302), and the arc rings (4) are arranged between the arc grooves (302).

7. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 1, characterized in that: The inner tube mechanism (11) comprises an inner tube (1101), the inner tube (1101) being arranged on the inner side of the outer tube (1) and the steering mechanism (8), ring blocks (1104) being arranged at the connection points at both ends of the inner tube (1101), U-shaped clamping blocks (1102) being arranged on the outer side of the ring blocks (1104), and a plurality of sealing gaskets (1103) being arranged between the ring blocks (1104).

8. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 4, characterized in that: A plurality of U-shaped pads (304) are disposed on the inner sides of the first outer tube (301) and the second outer tube (308), and positioning rods (305) are disposed at both ends of the lower U-shaped pad (304), and the positioning rods (305) are engaged with the cylindrical grooves corresponding to the upper U-shaped pad (304).

9. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 7, characterized in that: The U-shaped cushion blocks (304) are all engaged with the connecting pipe (2), and the U-shaped cushion blocks (304) are all in contact with the outer side of the connecting pipe (2).

10. The pressure-resistant and shock-resistant pipeline connection structure for deep-sea operations according to claim 4, characterized in that: The outer sides of the first outer circular tube (301) and the second outer circular tube (308) are both provided with a plurality of circular holes (303), and the plurality of circular holes (303) are distributed at equal intervals.

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